import Vue from 'vue'
import Router from 'vue-router'
import Login from '@/components/Login.vue'
import Home from '@/components/Home.vue'
import Welcome from '@/components/Welcome.vue'
import Users from '@/components/user/Users.vue'
import Rights from '@/components/power/Rights.vue'
import Roles from '@/components/power/Roles.vue'
import Cate from '@/components/goods/Cate.vue'
import Params from '@/components/goods/Params.vue'
import GoodsList from '@/components/goods/List.vue'
import Add from '@/components/goods/Add.vue'
import Order from '@/components/order/Order.vue'
import Report from '@/components/report/Report.vue'
Vue.use(Router)

const router = new Router({
  routes: [
    { path:'/', redirect: '/login' },
    { path: '/login', component: Login  },
    { path: '/home', 
      component: Home, 
      redirect: '/welcome',
      children:[
        {path: '/welcome', component: Welcome},
        {path: '/users', component: Users},
        {path: '/rights', component: Rights},
        {path: '/roles', component:Roles},
        {path: '/categories', component: Cate},
        {path: '/params', component: Params},
        {path: '/goods', component: GoodsList},
        {path:'/goods/add', component:Add },
        {path: '/orders', component: Order},
        {path: '/reports', component: Report}
      ]
    }
  ]
})  

//挂在路由导航守卫
router.beforeEach((to, from, next) => {
  //to 将要访问的路径
  //from 代表从哪个路径跳转而来
  //next 是一个函数 表示放行
  //  next() 放行   next('/login') 强制跳转
  if(to.path === '/login') return next();
  //获取token
  const tokenStr =window.sessionStorage.getItem('token')
  if(!tokenStr) return next('login')
  next()
})

export default router